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Ultrawideband transmission in physical channels: a broadband interference view

Abstrakt

The superposition of multipath components (MPC) of an emitted wave, formed by reflections from limiting surfaces and obstacles in the propagation area, strongly affects communication signals. In the case of modern wideband systems, the effect should be seen as a broadband counterpart of classical interference which is the cause of fading in narrowband systems. This paper shows that in wideband communications, the time- and frequency-domain approach of the linear time-invariant (LTI) systems theory does not fully reveal the significance of channelinduced distortions. A survey of MPC interference phenomena is presented, with time-evolving impulse responses and space-dependent notransfer functions. Linear prediction technique based on the autoregressive model is successfully applied as a complementary tool for speech signal distortion analysis in public address systems.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
Opublikowano w:
HYDROACOUSTICS nr 17, strony 129 - 136,
ISSN: 1642-1817
Język:
angielski
Rok wydania:
2014
Opis bibliograficzny:
Lasota H., Kochańska I., Mazurek R.: Ultrawideband transmission in physical channels: a broadband interference view // HYDROACOUSTICS. -Vol. 17., (2014), s.129-136
Weryfikacja:
Politechnika Gdańska

wyświetlono 88 razy

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